shoebill1

shoebill1

shoebill1

shoebill1

Landon v. FDR, 1936

Literary Digest polled 10 million Americans, 2.4 million responded.

N = 128 million, n = 2.4 million

Prediction: 43% for FDR

Result: 62% for FDR

What went wrong?

Literary Digest surveyed

  • magazine subscribers
  • registered car owners
  • registered telephone owners

These groups have a much higher income on average than the typical american. In 1936 the Great Depression is still in full swing, so the typical (poorer) american was more supportive of FDR.

Their sampling method was biased (not representative).